You are welcome!

Via pools is a flat 0.25% every time you swap (for you to see this, you would need to run a node where this value is configured). If you want to go that path, I can help.

Then, the rest of the percentage goes to slippage... which you are right, if a pool have low liquidity larger amounts will slip more. But one should be able to swap small amounts with very little slippage.

On the market, there are no fees. Only to withdraw or deposit to Hive Engine.

Any questions, tag me anytime. I will eventually reply.